Sir Martin Walker

No information is given about this artist on the web. This could be because of a deal within a streaming service, where the musician is anonymous, or the name is just one of several psuedonyms used by a music producer. This is usually done to save money in royalties, and drive down costs for the streaming service. Spotify has denied that they "create fake artists". You can read more about these artists here: Musicbusinessworldwide.com Digitalmusicnews.com theguardian.com